HCF4536BEY STMicroelectronics, HCF4536BEY Datasheet - Page 9

• Manufacturer Part Number: HCF4536BEY
• Description: IC PROGRAMMABLE TIMER 16 DIP
• Manufacturer: STMicroelectronics
• Type: Programmable Timerr

Specifications of HCF4536BEY

• Frequency: 5MHz
• Voltage - Supply: 3 V ~ 20 V
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Count: -
• Other names: 497-1377-5

FUNCTIONAL TEST SEQUENCE
Test function has been included for the reduction
of test time required to exercise all 24 counter
stages.This test function divides the counter into
three 8-stage section and 255 counts are loaded in
each of the 8-stage sections in parallel. All
TEST CIRCUIT
C
R
R
L
L
T
= 50pF or equivalent (includes jig and probe capacitance)
= 200K
= Z
In 1
OUT
H
H
H
H
L
L
L
L
L
of pulse generator (typically 50 )
Set
H
H
H
H
L
L
L
L
Inputs
Reset
H
H
H
H
H
L
L
L
FUNCTIONAL TEST SEQUENCE
8-Bypass
H
H
H
H
H
L
L
L
Decade Out
Outputs
Q1 Thru
Q24
flip-flops are now at a "H". The counter is now
returned to the normal 24-steps in series
configuration. One more pulse is entered into In1
which will cause the counter to ripple from an all
"H" state to an all "L" state.
H
H
H
L
L
L
L
Counter converted back to 24 stages in series
Counter Ripples from an all "H" state to an all
Counter is in three 8-stage section in parallel
255 "H" to "L" transitions are clocked in the
Set and Reset must be connected together
and simultaneously go from "H" to "L"
First "H" to "L" Transition of Clock
All 24 steps are in reset mode
The 255 "H" to "L" Transition
In
1
switches to a "H"
COMMENTS
"L" state
counter
mode.
mode
HCF4536B
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